Portable power unit



Dem 13, 1932.

A. M. BEVIER PORTABLE POWER UNIT Filed Sept. 6, 1930 5 Sheets-Sheet 1 IN VEN TOR.

ATTORNEYS.

Dec. 13, 1932. A. M. BEVIER PORTABLE POWER UNIT 6, 1930 5 Sheets-Sheet 2 Filed Sept IN VEN TOR.

I III A TTORNEYS.

Dec. 13, 1932. A. M. BEVIER PORTABLE POWER UNIT Filed Sept. 6, 1950 5 Sheets-Sheet 3 INVENTOR. QZ7WW520WT 6% l '14 ATTORNEYS;

Dec. 13, 1932. A. M. BEVlER PORTABLE POWER UNIT Filed Sept. 6, 19:50

5 Sheets-Sheet 4 INVENTOR.

ATTRNEYS.

Dec. 13, 1932. A. M. BEVIER PORTABLE POWER UNIT 5 Sheets-Sheet 5 Filed Sept. 6, 1950 Patented Dec. 13, 1932.

PATENT OFFICE;

Annular. ZBEVIER, or DULUTH, mrnnnsom ron'mnnn rowan UNIT Application filed September 6, 1930. Serial No. 480,173.

This invention relates to portable power units and has special reference to such a unit particularly adapted for use in drilling, such for example as test holes in exploring for is precious metals, oils, or the like in the earth; the same being ofthe type known as rotary drills in which a core is produced.

The principal objects are simplicity of coni struction, convenience in operation, and

adaptability to one man control, while other objects and advantages of the invention will appear in the further description thereof,

Referring now to the accompanying drawings forming part of this application and wherein like reference characters indicate like parts: 1

Figure 1 is a plan view of one of the completely assembled units;

Figure 2 is a side elevation;

Figure 3 is a front elevation Figure 4 is a vertical section through the hoisting drum illustrating its double purpose adaptability;

Figure 5 is a vertical section on the line Y 5-5, Figure 1, showing the novel arrangement of pump connection;

Figure 6 is a side elevation of the drill head stand; Figure 7 is a perspective View of a modified support for the stand;

Figure 8 is an elevation of the pump packing gland;

Figure 9 is aside elevation of one of the V packing nuts;

Figure 10 is a plan view of the casing jaws. In the drawings, 1 represents-the chassis or carriage of the unit which is preferably of sled-like form having the runners 2 upon either side thereof for slidable engagement with i '40 the ground.

double phase line winding drum 8 or the line winding drum 9, as preferred; the relative position of these winding drums being clearly illustrated in Figure 4 of the drawings; they each being held when applied to the spool 4 by the bolting home of the head 5 of said spool 4.

The motor is illustrated at 10, and in this instance a gas engine is shown which is disposed transverse the rear end of the chassis and directly connected as by the spur gear 11 to the larger spur gear'12 on the counter or jack shaft 13, also transverse the chassis intermediate of the winding drum and engine. A small gear 14 is fixed to the shaft 13 and is in constant mesh with the larger gear 15 on the shaft 3. This gear 15 carries upon the face adjacent the winding drum an annular bevelled friction member 16, preferably of wood for frictional engagement with the head 6 of the spool 4. The spool 4 is manipulated in a manner common in the art by the back and forth thrust on the shaft 3, and which adjustment is controlled in the usual manner by the lever 17, the details of which are not deemed essential in my present invention other than to say that one material improvement therein which I have devised is the installation of the sleeve or fillet washer 18 intermediate of the outer ballbearing of the gear 15 and the hearing 19 for the shaft 3, this being for the purpose of preventing any untoward movement of the bearing of the gear 15 in the event of any abnormal thrust by the operator of the drum control mechanism.

Another novel feature of the power unit is that the brake control is remote from the winding drum, to accomplish which I have installed the jack or counter shaft 20, also transverse the chassis and materially beneath and between the shafts 3 and13, upon which is mounted the fiat friction wheel 21 carrying the friction band 22 controlled by the eccentric not shown on the lever operated shaft 23, the hand lever being illustrated at 24. The connection of the winding spool with this brake jack shaft is accomplished through the largespur gear 25 on the head 6 of the spool being in constant mesh with the smaller'spur 100 gear illustrated in dotted lines at 26 upon the shaft 20.

The object of this remote control from the winding drum is readily appreciated in that all possibility of chattering by intermittent slipping of the larger member is overcome due to the leverage of the small gear meshing with the larger one.

The winding drum 8 is peculiar in that it is of the double stage type, that is to say, a series of helical grooves as indicated at 27 intermediate of a series of larger grooves or sheave like members indicated at 28, so that when slow speed of the winding drum is desired the same may be accomplished in the grooves 27, and when a greater speed is desired, such for example in handling of the drill rods, the line may be fed in the larger diametered sheave 28; this being fully appre ciated by those versed in the art of drilling and essential to the successful and varied operation of such a machine.

When the ordinary winding of a line is essential which so frequently happens in the art, the plain drum 9 may be installed upon the spool 4 and such ordinary handling of a line accomplished. Upon the right hand front corner of the chassis and pivoted as at 29 is the drill head stand 30, the head proper being shown at 31 in which the drill and casing are pivotally mounted, and the guide block or casing jaws therebelow and attached to the head frame is illustrated at 32, the details of which will be described later. The power shaft for the head is shown at 33 and operated by the small pulley 34 fixed thereto and receives power by the belt 35 from the pulley 36 on the shaft 13. This belt passes over the adjustable idler 37 so that any tautness of the belt desired may be accon'iplished. By this means the drill head may be nicely adjusted to any desired angle, and being at one corner of the unit it is readily discernible by the operator who stands adjacent that side of the unit for careful control of same.

Just back of the drill head and extending from either side of the unit are the shear legs 38 and 39 which are preferably of wood, they being pivoted in the supports 40 upon the chassis, the one nearest to the drill head being materially more nearly vertical and stronger than the other one so that their uppermost union occurs directly over the center of the head at a suitable height for proper manipulation of the drill casing and other mechanism connected with such work. A novel feature of this assembly results in the supports or legs 40 being bolted to the chassis in preference to being formed integral therewith, thus providing means for adjustability in the event of the legs becoming twisted, as frequently happens, so that the sheave at the upper end is thrown out of alignment with the center of the drill head, when shimming up under either of the supports 40 may correct such clisalignment.

The pivotal supports of the legs 38 and 39 are positioned rearwardly of the drill head for the express purpose of providing clearance for the manipulation of wrenches about the drill rods, or the placing and other handling of the casing or rods as the case may be by the operator, whose position, for convenient manipulation of either of the levers 17 or 24, is ideal for such operation.

Continuous stress must be applied from the drum through the medium of the tackle supported by the shear legs when the drill is in operation, since it is known that uniform weight on the bit when in operation mustbe maintained, and of course the mechanism furnishing the power for rotating the drill must be continuously active during the drill ing process.

In the use of such a unit for operating a rotary drill a constant supply o'fwat'er and pressure are essential and to .which end I have installed the reciprocable pump illustrated at 41, the air chamber of which is shown at 42 and the pitman 43 of the pump is connected by the crank arm 44 to the protruding end of the shaft13.

The novel features of the pump arrangement which I deem an essential 'part'of the present invention is the plunger connection to the pitman 43; It is important in'this portable power unit that any portion thereof extending beyond'the side, such as the pump 41, should be placed considerably rearwardly of the forward corner of the chassis ofthe unit to avoid obstruction of the passageway thereabouts, and this necessitates the material shortening of the space for the pump intermediate of the corner 'of the chassisand the shaft 13, which operates the pump so that to obtain the longest stroke possible in such space I have provided the hollow plunger 45, having the ball and socket connection to the pitman 43, as illustrated at 46, and this connection comprises the removable 'socket member set into a suitable annular recess in the upper end of the plunger and the castellated conically bored nut 48. r 1

This novel assembly further consists of the outer end of the pump cylinder being castellated for the reception of the jamwings 49 of the elongated packing gland 50, the portions of the pump cylinder intermediate of the cutaway portions being externally screw threaded asat'51 for the reception of the jam nuts 52 and 53. The gland'50 is elongated and protrudes normally considerably beyond the end of the pump cylinder so as to'form a guide for the outer end of the plunger during its extreme outermost stroke, and'this gland being hollow together-with the conical shape of bore of the nut 48 admits of free radial action of the pitman 43, as illustrated .in dotted lines in Figure 5. course the pump is operated continuously during the drilling operation to keep the cuttings in agitation above the shot, and to keep the latter free and clean at all times.

The packing is illustrated at 54 and the pressure of which is obviously controlled by the adjustment of the jam nuts 52 and 53.

A novel feature of the drill head stand is that of its being pivoted at 29., as previously described, with the heel 55 thereof being held to the chassis by means of the through bolt 56 so that when it becomes desirable to drill at an angle the heel of the stand may be loosened and attached laterally through the hole 57 to the upstanding arcuate bracket 58 which is bolted as through the holes 59 to the chassis. As this arcuate bracket is provided with a plurality of holes indicated at 60 the heel of the stand may be attached to any one of same necessary to produce the desired angularity of the drill.

An enlarged plan view of the casing clamp jaws is illustrated in Figure 10, the principal. novel feature of these jaws being that the outermost or adjustable one illustrated at 61 is internally serrated vertically as at 62 to prevent rotation of the casing, while the fixed or innermost j aw63 is serrated horizontally as at 64 to prevent vertical movement of the casing, this being an exceedingly advantageous feature in the handling of the casing.

From the foregoing it is evident that I have devised an exceedingly simple and practical portable power unit having a plurality of novel features cooperatively united in a manner to produce such results, and a power unit readily operable by one man.

Having thus described my invention, what I claim and desire to secure by Letters Patent, is:

A one man portable drilling machine of the type described, comprising a rectangular frame, a winding drum mounted centrally thereon, a power unit in rear of said drum, control levers for the winding drum on one side of the frame, a drill head mounted upon the forward corner ofthe frame adjacent the control lever, and a pump carried by the frame at the opposite forward corner to counterbalance the drill head whereby there is an even distribution of the weight of all the elements on the frame and the operator can operate the levers with one hand and feel or turn the drill with the other hand.

In testimony whereof I affix my signature.

ABRAM M. BEVIER. 

